Figure 1
-Use Figure 1 to complete the following statement. A high-mass protostar remains roughly constant in _________ and increases in _________ as it follows its evolutionary track.
A) temperature; luminosity
B) radius; temperature
C) luminosity; radius
D) luminosity; temperature
E) radius; luminosity

Question

Figure 1
-Use Figure 1 to complete the following statement. A high-mass protostar remains roughly constant in _________ and increases in _________ as it follows its evolutionary track.
A) temperature; luminosity 
B) radius; temperature 
C) luminosity; radius 
D) luminosity; temperature 
E) radius; luminosity

Quizplus · Accepted Answer

As a high-mass protostar evolves, it undergoes gravitational collapse and fusion reactions that increase its temperature and consequently its luminosity. Its radius also increases, but the change in luminosity is more significant, resulting in a net increase in luminosity. Therefore, a high-mass protostar remains roughly constant in temperature and increases in luminosity as it follows its evolutionary track.

Figure 1 -Use Figure 1 to Complete the Following Statement. a High-Mass